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The authors report a case of recurrent sulfhemoglobinemia resulting from a chronic abuse of phenacetin. Cyanosis was accompanied by hemolytic anemia and numerous features of tissue aging. While phenacetin was found to be the oxidizing drug, no source of sulfur was identified. The origin of
The influences of methylene blue (MB), thionine, ascorbic acid (ASA), sodium thiosulfate (STS), N-(2-mercaptopropionyl)-glycine (MPG) and reduced glutathione (GSH) on methemoglobin-(MHb)-emia and sulf-hemoglobin (SHb)-emia induced by 4-chloroaniline (4-Cl-A) i.p. were studied. Preventive or
Red blood cell activities of superoxide dismutase and glutathione peroxidase, two key enzymes responsible for the control of the concentrations of activated oxygen species, were approximately two-fold higher in residents of Vila Parisi (Cubatão, Brazil)--a higher polluted neighborhood--than in a